The animation was good, you used nice effects, like the match in the cave thing artwork was simple but solid.

Obvious foreground flaws like the space at the bottom when he jumps in the hole. these are minor fixes. I really liked the blurred effect of the background, that gave it a more professional feel and really helped this flash out

Maybe some music would have given it a kick, although the sound effects were nice as well

i really liked the ideas and stuff
and your style is coming of well for a first time dude, but of course there are a few flaws.
even though they arn't big, but its nice to have a bit more detail, like chips in that things teeth, or like grooves in the wood of the tree
but otherwise
you pretty good, so im looking forward to the next one!